@article{2007_4,
  title = "Non--linear modelling of breast tissue",
  author = "J.P.\ Whiteley and D.J.\ Gavaghan and S.J.\ Chapman and J.M.\ Brady",
  year = "2007",
  journal = "Mathematical Medicine and Biology",
  pages = "327--345",
  volume = "24",
  doi = "10.1093/imammb/dqm006",
}